The rupiah (Rp) is the official currency of Indonesia and is subdivided into 100 sen. The name derives from the Indian monetary unit rupee which is called as rupiya in Indian languages. Informally, Indonesians also use the word "perak" in referring to rupiah. Inflation has now rendered all coins and banknotes denominated in sen obsolete.

A baht is also a unit of weight for gold and is commonly used in jewellers and goldsmiths in Thailand. The currency was originally known as the tical and this name was used in the English language text on banknotes until 1925.